WTI versus Brent
WTI references US crude, Brent references North Sea crude. They move together most of the time, and the spread between them reflects regional supply and transport conditions rather than trading opportunity for most retail traders.
Scheduled volatility
Weekly US inventory data reliably produces a sharp move. Producer group meetings and supply disruptions produce larger, less predictable ones. Holding through these events without a plan is speculation, not trading.
Contract and cost notes
Oil CFDs have a daily maintenance break, wider spreads outside US hours, and swap charges that reflect the cost of rolling the underlying contract. Long-term holds can accumulate meaningful financing costs.